This product is a godsend for my fine, frizzy hair. It tames my hair and gives it a fantastic shine! The conditioner somehow spreads up the hair and "fills in" the frizzy parts such that it looks and feels healthy and shiny. It mimics exactly the effects of the Syoss Deep Moist Treatment Conditioner, which I have been unable to find since my hairdresser stopped carrying it. It's cheaper too! I ran around with frizzy hair for about 2 months before I finally found this fantastic product. THANK YOU SHISEIDO.